Blue-print machine.



w. M. BALENHNE.

BLUE PRINT MACHINE.

APPLICATION HLED AUG. 10. I917 1,282,668. Patented 0m. 22, 1918.

2 SHEETSSHEET l.

INVENTOR ATToRN EY INVENTOR ATTORNEY w. M. BALENI'INE.

BLUE PRINT MACHINE.

APPLICATION FILED AUG. I0. I9I7.

Patented Oct. 22, 1918,

2 SHEETS SHEET 2.

WITNESSES UNITED STATES PATENT OFFICE.

WILLIAM M. BALEN'IINE, or LAS canons, NEW MEXICO.

BLUE-ERIN '1 MACHINE.

To all whom it may concern:

Be it known that I, WILLIAM M. Bannis- TINE, a citizen of the UnitedStates, residing at Las Cruces, in the county of Dona Ana and State ofNew Mexico, have invented new and useful Improvements in Blue-PrintMachines, of which the following is a spec1fi cation.

This invention relates to photography, and more especially to continuousprinting machines; and the object of the same 1s to produce a deviceadapted particularly for printing from tracings or the like onto blueprint paper or the like, although of course it could be used for otherpurposes.

The invention consists in details of construction hereinafter more fullydescribed and claimed, and as shown in the drawings wherein:

Figure 1 is a front elevation of this machine complete, and Fig. 2 isaside view thereof, showing it in dotted lines as turned on its gudgeonsfor a purpose yet to appear.

' Fig. 3 is a rear elevation of the machine with the doors of its boxesopen and its rods partly withdrawn, and Fig. 1 is a central verticalsectional view with these doors closed.

Fig. 5 is an enlarged detail showing the means for locking and guidingthe shade bars. a

Fig. 6 is an enlarged detail showing the means for adjusting the collarsand flanges on the roller or shaft.

Fig. 7 is an enlarged sectional detail, partly in elevation, showing thesensitized paper roll.

The machine is preferably mounted ona wheeled base 1 from which rise twostandards 2. The main frame work 3 has trunnions orgudgeons 4 journaledin the upper ends of said standards, and one of them I fixedly carries agear 5 rotating inside its standard, the latter being provided withpivoted catch 6 to engage the teeth in said gear so that the frameworkmay be set at any desired angle, as indicated by the full and dottedlines in Fig. 2. I have shown and described this form of support as thatwhich I preferably employ, but it is obvious that any other suitablesupport could be used.

The main framework comprises a pair of Specification of Letters Patent.

Patented Oct. 22, 1918.

Application filed August 10, 1917. Serial No. 185,596.

side bars 10 connecting upper and lower boxes 11 and 12, each having acover or door 13 hinged at one end and latched closed at the other as at14;, so that access to it is possible from what I will call the back ofthe framework. Between said side bars is fixed a sheet or pane of glass15, and forward of the glass each side bar carries a strip 16 producingbetween it and the glass a channel for the extremities of a shade bar 17which is rectangular in shape and has an outstanding handle 18. To eachshade bar is attached a shade 19 which winds around an ordinary springroller 20 journaled between the side bars 10 next the boxes. By graspingthe handle of either shade, the bar 17 may be moved across the face ofthe glass, and then by means of the handle the shade bar may be turnedslightly in the channel behind the strips 16 so as to hold the shadeagainst the tension of the spring in its roller. One shade may be drawndownward part way over the glass and the other upward part way, and bythis detailed structure any part of-the sensitized paper can be exposedas the necessities of the case demand.

Behind the glassstands a backboard 25 which is of a size to fit closelybetween the side bars 10 and the two boxes, and the face is covered witha felt mat over which is a soft cloth where it bears against the rearside of the glass 15. This board, is strengthened by a pair of uprightribs 24 through which are cut slightlyoblique slots 23 registering withstrictly upright slots 22 in the side bars 10, and rods 21 are passedthrough all of said slots for holding the backboard in place. When eachrod has been inserted it is pressed downward, and it may move easilydownward in the slots 22 whereas in its movement in the oblique slots 23it presses the backboard toward the glass. To remove the rod, it israised and then drawn longitudinally out of place as indicated in Fig.3. I prefer this simple means for locking the backboard in place,although of course'other means might be employed if desired. Thestandards 2 are so spaced that the extremities of the rods pass betweenthem allowing the framework to revolve in its gudgeons so that eitherthe back or the front of the framework can be turned toward the sourceof light. The contents of 31 and in one end with a transverse notch 32..

Engaging said notch is the head 33 of a T-shaped shaft 3% journaled inone end of the box and having a crank handle 35 on its exterior. A setscrew 86 passes through the other end of the box and a tension spring 36and into a socket in the opposite end of the roller, and when this setscrew is advanced the notch is held on the T-head 33 so that by turningthe handle 35 the roller is rotated; whereas, when the set screw isretracted,"the roller can be lifted out of place and its notchdisengaged from the crank shaft. Loosely mounted on the roller near eachend thereof is a collar 37 also slightly oval as seen in Fig. 6, andthis collar carries a flange 38. For strips of material of variouswidths, the collars are turned so that they are loose on the roller,then moved lengthwise thereon to adjust the flanges to the edges of thestrips, and then again turned so that they are tight on the roller. Forfastening the extremity of a strip of paper or the like to the roller,its corners are cut off oblique and the tongue or reduced tip thusproduced is projected through the slot 31 in the roller and the latterturned, thus following the practice adopted in a popular type of cameranow on the market. The roller 30 thus described may be used forsensitized paper, and a like roller 39 also mounted in the box may beused for tracing linen or paper. The rollers in Fig. 4 are shown at theupper part of the structure as filled with paper and those at the bottomas empty. The paper is led from the rollers through an appropriate slot40 in the bottom of the box, behind the shade roller 30, and across therear face of the glass 15; then through another slot 41 into theopposite box, and wound on the rollers there in a manner which will beclear. It should be remembered that I am describing this machine as usedfor blue prints, although of course I do not wish to be limited in thatrespect as it can be used to a still greater advantage for photographicprint- The use of this machine is as follows: The machine on its, wheelbase is moved to any desired location, having the framework locked in aperpendicular position, thus occupying less floor space and making themachine easier to handle. After the machine is properly located thecatch 6 is disengaged from the gear 5, and the framework is turned intoa horizontal position and locked so by the catch 6. The rods 21 are thendrawn laterally out of the slotted holes and the operator takes off theback as seen in dotted lines in Figs, and he is then able to open bothroller boxes. The tracing is now rolled on the proper roller, leavingenough to reach across the glass and start on roller in the oppositebox. The sensitized or blue )rints paper is now started on the properroller, so as to come on top of the tracing and is connected to theopposite roller in like manner to the tracing. The doors to the boxesare then closed except for the slots 40 and 41. The back is thenreplaced as before and the rods inserted in their place and moved in theproper direction within the oblique slots to press the mat firmlyagainst the papers over the, glass. The catch 6 is then disengaged andthe. framework turned to a. perpendicular position and so locked bycatch 6. The machine is now ready to be moved on its wheel base to anydesired point for exposing or printing, and the framework is so tiltedthat the rays of the light used for printing will be at right anglesandso left until the printing is completed. The, catch 6 is then disengagedfrom the gear. 5 and the framework turned with the back toward thelight. The projecting ends of the rods 21 serve as handles by. which thesaid rods may be forced downward, thus causin the. back to release thepapers under the g ass allowing the same to be adjusted by turning thecranks in the rollers in the proper direction to move the paper ortracing to any desired point under the area of the glass. The, shade orshades are then adjusted so. as to expose: the portionof the area ofthev glass to suit the tracing under the same: after this is done thecatch 6 is again disengaged, the, framework turned back to a horizontalposition, and the operation repeated until the, printing is completed.The machine isthen moved on its wheel base to; any desired place, the,framework is set at the sameposition as for loading, the back isremoved, the sensitized paper whichhas been printed, is pulled backthrough the slot out of the box, and cut off one sheet at a time andWashed in the usual way. The frameworkv is then placed in aperpendicular position and left. when not in use.

'Wha t is claimed as new is 1. In a printing frame, the combination witha base having a pair of spaced standards, a framework jonrnaled in saidstandards, of boxes at thev top and'bottom of said fralma rk;and; g a setwcen hemi 120 spring rollers journaled in the framework forward of theglass and adj acent the. boxes, shades on said rollers, bars at thei feedges of said shades, the framework havin chan-. nels in which theextremities. of; sand bars 125 aremovably mounted and within which-theyare adapted to, be locked when canted, and aback platebehind the glass.

2. In a printing frame, the combination with a, main framework havingboxes attop 130 angularly shaped bar fixed to the free end of each shadewith its extremities traveling in said channels and adapted to be locked10 therein by cantin the bar.

In testimony w ereof I afiix my signature.

WILLIAM M. BALENTINE.

and bottom and a glass between them, strips in the side bars of theframework producing channels forward of said glass, a back plate in rearof said glass, and rollers in the boxes; of spring rollers journaledbetween the side bars of the framework adjacent said boxes, shades woundthereon, and an Copies 0! this patent may be obtained for five centseach, by addressing the Commissioner of Patents, Wuhlngton, D. 0.

